Irregular cycle

I'm 18 I started my period when I was 13. So for 5 years I have been waiting for it to settle into a pattern...and it hasn't. Sometimes it will be like every 10 days sometimes its 18 sometimes it 21 and somtimes its 31, but usually I find I'm on for 7 days off for 7 on for 7 and I can't cope,...

What should I do? I'm 18 and have an irregular period my period doesn't come that often and sometimes delays about 5-3 months sometimes more..I asked my doctor once and I asked her if it was normal she said yes..my boyfriend and I have unprotected sex and I usually buy the take home test and they...

:confused: In december 06 I missed 1 af,I got nothing for 5 weeks and then on jan 8th I got mild cramping and bleeding that lasted nearly two days,now I normally get mine for 3-4 days.But during the year my partner and I experienced a a lot of stress that played havoc with cycle--now tell me do...

The last time I got my period was back around aug. 17...it lasted for a bout a week or so and I haven't had it since. I took a couple of home pregnancy tests and they all came back negative. I just went and took a blood test and still negative. However I still have some pregnancy symptoms. Sore...

I wanted to know I am the mother of 2 young children I got my period but its irregular could I be pregnant.could using drugs affect my period